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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #ifndef SIGROK_SIGROK_H | |
21 | #define SIGROK_SIGROK_H | |
22 | ||
23 | #include <stdio.h> | |
24 | #include <sys/time.h> | |
25 | #include <stdint.h> | |
26 | #include <inttypes.h> | |
27 | #include <glib.h> | |
28 | #ifdef HAVE_LIBUSB_1_0 | |
29 | #include <libusb.h> | |
30 | #endif | |
31 | ||
32 | #ifdef __cplusplus | |
33 | extern "C" { | |
34 | #endif | |
35 | ||
36 | /* | |
37 | * Status/error codes returned by libsigrok functions. | |
38 | * | |
39 | * All possible return codes of libsigrok functions must be listed here. | |
40 | * Functions should never return hardcoded numbers as status, but rather | |
41 | * use these #defines instead. All error codes are negative numbers. | |
42 | * | |
43 | * The error codes are globally unique in libsigrok, i.e. if one of the | |
44 | * libsigrok functions returns a "malloc error" it must be exactly the same | |
45 | * return value as used by all other functions to indicate "malloc error". | |
46 | * There must be no functions which indicate two different errors via the | |
47 | * same return code. | |
48 | * | |
49 | * Also, for compatibility reasons, no defined return codes are ever removed | |
50 | * or reused for different #defines later. You can only add new #defines and | |
51 | * return codes, but never remove or redefine existing ones. | |
52 | */ | |
53 | #define SR_OK 0 /* No error */ | |
54 | #define SR_ERR -1 /* Generic/unspecified error */ | |
55 | #define SR_ERR_MALLOC -2 /* Malloc/calloc/realloc error */ | |
56 | #define SR_ERR_ARG -3 /* Function argument error */ | |
57 | #define SR_ERR_SAMPLERATE -4 /* Incorrect samplerate */ | |
58 | ||
59 | #define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */ | |
60 | #define SR_MAX_PROBENAME_LEN 32 | |
61 | ||
62 | /* Handy little macros */ | |
63 | #define SR_HZ(n) (n) | |
64 | #define SR_KHZ(n) ((n) * 1000) | |
65 | #define SR_MHZ(n) ((n) * 1000000) | |
66 | #define SR_GHZ(n) ((n) * 1000000000) | |
67 | ||
68 | #define SR_HZ_TO_NS(n) (1000000000 / (n)) | |
69 | ||
70 | typedef int (*sr_receive_data_callback) (int fd, int revents, void *user_data); | |
71 | ||
72 | /* Data types used by hardware plugins for set_configuration() */ | |
73 | enum { | |
74 | SR_T_UINT64, | |
75 | SR_T_CHAR, | |
76 | SR_T_NULL, | |
77 | }; | |
78 | ||
79 | enum { | |
80 | SR_PROTO_RAW, | |
81 | }; | |
82 | ||
83 | #if 0 | |
84 | /* (Unused) protocol decoder stack entry */ | |
85 | struct sr_protocol { | |
86 | char *name; | |
87 | int id; | |
88 | int stackindex; | |
89 | }; | |
90 | #endif | |
91 | ||
92 | /* sr_datafeed_packet.type values */ | |
93 | enum { | |
94 | SR_DF_HEADER, | |
95 | SR_DF_END, | |
96 | SR_DF_TRIGGER, | |
97 | SR_DF_LOGIC, | |
98 | SR_DF_ANALOG, | |
99 | SR_DF_PD, | |
100 | }; | |
101 | ||
102 | struct sr_datafeed_packet { | |
103 | uint16_t type; | |
104 | uint64_t length; | |
105 | uint16_t unitsize; | |
106 | void *payload; | |
107 | }; | |
108 | ||
109 | struct sr_datafeed_header { | |
110 | int feed_version; | |
111 | struct timeval starttime; | |
112 | uint64_t samplerate; | |
113 | int protocol_id; | |
114 | int num_analog_probes; | |
115 | int num_logic_probes; | |
116 | }; | |
117 | ||
118 | #if defined(HAVE_LA_ALSA) | |
119 | struct sr_analog_probe { | |
120 | uint8_t att; | |
121 | uint8_t res; /* Needs to be a power of 2, FIXME */ | |
122 | uint16_t val; /* Max hardware ADC width is 16bits */ | |
123 | }; | |
124 | ||
125 | struct sr_analog_sample { | |
126 | uint8_t num_probes; /* Max hardware probes is 256 */ | |
127 | struct sr_analog_probe probes[]; | |
128 | }; | |
129 | #endif | |
130 | ||
131 | struct sr_input { | |
132 | struct sr_input_format *format; | |
133 | char *param; | |
134 | struct sr_device *vdevice; | |
135 | }; | |
136 | ||
137 | struct sr_input_format { | |
138 | char *id; | |
139 | char *description; | |
140 | int (*format_match) (const char *filename); | |
141 | int (*init) (struct sr_input *in); | |
142 | int (*loadfile) (struct sr_input *in, const char *filename); | |
143 | }; | |
144 | ||
145 | struct sr_output { | |
146 | struct sr_output_format *format; | |
147 | struct sr_device *device; | |
148 | char *param; | |
149 | void *internal; | |
150 | }; | |
151 | ||
152 | struct sr_output_format { | |
153 | char *id; | |
154 | char *description; | |
155 | int df_type; | |
156 | int (*init) (struct sr_output *o); | |
157 | int (*data) (struct sr_output *o, const char *data_in, | |
158 | uint64_t length_in, char **data_out, uint64_t *length_out); | |
159 | int (*event) (struct sr_output *o, int event_type, char **data_out, | |
160 | uint64_t *length_out); | |
161 | }; | |
162 | ||
163 | #if 0 | |
164 | struct sr_analyzer { | |
165 | char *name; | |
166 | char *filename; | |
167 | /* | |
168 | * TODO: Parameters? If so, configured plugins need another struct. | |
169 | * TODO: Input and output format? | |
170 | */ | |
171 | }; | |
172 | #endif | |
173 | ||
174 | struct sr_datastore { | |
175 | /* Size in bytes of the number of units stored in this datastore */ | |
176 | int ds_unitsize; | |
177 | unsigned int num_units; /* TODO: uint64_t */ | |
178 | GSList *chunklist; | |
179 | }; | |
180 | ||
181 | /* | |
182 | * This represents a generic device connected to the system. | |
183 | * For device-specific information, ask the plugin. The plugin_index refers | |
184 | * to the device index within that plugin; it may be handling more than one | |
185 | * device. All relevant plugin calls take a device_index parameter for this. | |
186 | */ | |
187 | struct sr_device { | |
188 | /* Which plugin handles this device */ | |
189 | struct sr_device_plugin *plugin; | |
190 | /* A plugin may handle multiple devices of the same type */ | |
191 | int plugin_index; | |
192 | /* List of struct sr_probe* */ | |
193 | GSList *probes; | |
194 | /* Data acquired by this device, if any */ | |
195 | struct sr_datastore *datastore; | |
196 | }; | |
197 | ||
198 | enum { | |
199 | SR_PROBE_TYPE_LOGIC, | |
200 | SR_PROBE_TYPE_ANALOG, | |
201 | }; | |
202 | ||
203 | struct sr_probe { | |
204 | int index; | |
205 | int type; | |
206 | gboolean enabled; | |
207 | char *name; | |
208 | char *trigger; | |
209 | }; | |
210 | ||
211 | /* TODO: Get rid of this global variable. */ | |
212 | extern GSList *devices; | |
213 | ||
214 | /* Hardware plugin capabilities */ | |
215 | enum { | |
216 | SR_HWCAP_DUMMY, /* Used to terminate lists */ | |
217 | /* device classes */ | |
218 | SR_HWCAP_LOGIC_ANALYZER, | |
219 | ||
220 | /* device options */ | |
221 | SR_HWCAP_SAMPLERATE, /* Change samplerate */ | |
222 | SR_HWCAP_PROBECONFIG, /* Configure probe mask */ | |
223 | SR_HWCAP_CAPTURE_RATIO, /* Set pre/post-trigger capture ratio */ | |
224 | SR_HWCAP_PATTERN_MODE, /* Pattern generator mode */ | |
225 | ||
226 | /* special stuff */ | |
227 | SR_HWCAP_CAPTUREFILE, /* capturefile to inject */ | |
228 | SR_HWCAP_CAPTURE_UNITSIZE, /* unitsize of capturefile data */ | |
229 | SR_HWCAP_CAPTURE_NUM_PROBES,/* set number of probes */ | |
230 | ||
231 | /* acquisition modes */ | |
232 | SR_HWCAP_LIMIT_MSEC, /* Set a time limit for sample acquisition */ | |
233 | SR_HWCAP_LIMIT_SAMPLES, /* Set a limit on number of samples */ | |
234 | SR_HWCAP_CONTINUOUS, | |
235 | }; | |
236 | ||
237 | struct sr_hwcap_option { | |
238 | int capability; | |
239 | int type; | |
240 | char *description; | |
241 | char *shortname; | |
242 | }; | |
243 | ||
244 | struct sr_device_instance { | |
245 | int index; | |
246 | int status; | |
247 | int instance_type; | |
248 | char *vendor; | |
249 | char *model; | |
250 | char *version; | |
251 | void *priv; | |
252 | union { | |
253 | struct sr_usb_device_instance *usb; | |
254 | struct sr_serial_device_instance *serial; | |
255 | }; | |
256 | }; | |
257 | ||
258 | /* sr_device_instance types */ | |
259 | enum { | |
260 | SR_USB_INSTANCE, | |
261 | SR_SERIAL_INSTANCE, | |
262 | }; | |
263 | ||
264 | #ifdef HAVE_LIBUSB_1_0 | |
265 | struct sr_usb_device_instance { | |
266 | uint8_t bus; | |
267 | uint8_t address; | |
268 | struct libusb_device_handle *devhdl; | |
269 | }; | |
270 | #endif | |
271 | ||
272 | struct sr_serial_device_instance { | |
273 | char *port; | |
274 | int fd; | |
275 | }; | |
276 | ||
277 | /* Device instance status */ | |
278 | enum { | |
279 | SR_ST_NOT_FOUND, | |
280 | /* Found, but still booting */ | |
281 | SR_ST_INITIALIZING, | |
282 | /* Live, but not in use */ | |
283 | SR_ST_INACTIVE, | |
284 | /* Actively in use in a session */ | |
285 | SR_ST_ACTIVE, | |
286 | }; | |
287 | ||
288 | /* | |
289 | * TODO: This sucks, you just kinda have to "know" the returned type. | |
290 | * TODO: Need a DI to return the number of trigger stages supported. | |
291 | */ | |
292 | ||
293 | /* Device info IDs */ | |
294 | enum { | |
295 | /* struct sr_device_instance for this specific device */ | |
296 | SR_DI_INSTANCE, | |
297 | /* The number of probes connected to this device */ | |
298 | SR_DI_NUM_PROBES, | |
299 | /* Samplerates supported by this device, (struct sr_samplerates) */ | |
300 | SR_DI_SAMPLERATES, | |
301 | /* Types of trigger supported, out of "01crf" (char *) */ | |
302 | SR_DI_TRIGGER_TYPES, | |
303 | /* The currently set samplerate in Hz (uint64_t) */ | |
304 | SR_DI_CUR_SAMPLERATE, | |
305 | /* Supported pattern generator modes */ | |
306 | SR_DI_PATTERNMODES, | |
307 | }; | |
308 | ||
309 | /* | |
310 | * A device supports either a range of samplerates with steps of a given | |
311 | * granularity, or is limited to a set of defined samplerates. Use either | |
312 | * step or list, but not both. | |
313 | */ | |
314 | struct sr_samplerates { | |
315 | uint64_t low; | |
316 | uint64_t high; | |
317 | uint64_t step; | |
318 | uint64_t *list; | |
319 | }; | |
320 | ||
321 | struct sr_device_plugin { | |
322 | /* Plugin-specific */ | |
323 | char *name; | |
324 | char *longname; | |
325 | int api_version; | |
326 | int (*init) (const char *deviceinfo); | |
327 | void (*cleanup) (void); | |
328 | ||
329 | /* Device-specific */ | |
330 | int (*open) (int device_index); | |
331 | void (*close) (int device_index); | |
332 | void *(*get_device_info) (int device_index, int device_info_id); | |
333 | int (*get_status) (int device_index); | |
334 | int *(*get_capabilities) (void); | |
335 | int (*set_configuration) (int device_index, int capability, void *value); | |
336 | int (*start_acquisition) (int device_index, gpointer session_device_id); | |
337 | void (*stop_acquisition) (int device_index, gpointer session_device_id); | |
338 | }; | |
339 | ||
340 | struct sr_session { | |
341 | /* List of struct sr_device* */ | |
342 | GSList *devices; | |
343 | /* List of struct analyzer* */ | |
344 | GSList *analyzers; | |
345 | /* list of sr_receive_data_callback */ | |
346 | GSList *datafeed_callbacks; | |
347 | GTimeVal starttime; | |
348 | gboolean running; | |
349 | }; | |
350 | ||
351 | #include "sigrok-proto.h" | |
352 | ||
353 | #ifdef __cplusplus | |
354 | } | |
355 | #endif | |
356 | ||
357 | #endif |